Locking device to prevent removal of sliding windows and doors



FIG. 1 is a perspective view of a locking device to prevent removal of sliding windows and doors, showing my new design;

FIG. 2 is a rear-elevational view thereof;

FIG. 3 is a side-elevational view thereof; and

FIG. 4 is a bottom-plan view thereof. 

The ornamental design for a locking device to prevent removal of sliding windows and doors, as shown. 